Canon S450 User Manual page 26

Note
Hold down the RESUME button until the POWER light starts to flash.Then,
release the button.The following operations are performed, depending on
how many times the light flashes.
• If you release the button after the light flashes once:
Print head cleaning is performed.
• If you release the button after the light flashes twice:
A Nozzle Check Pattern is printed out.
• You can also perform these tasks from the printer driver.
Windows
Macintosh
Cleaning the Print Heads
Printing a Nozzle Check Pattern
Using Maintenance Functions
Printer Maintenance
Parts and Functions of the Printer
Operation Panel
26